dart:async

run method

void run(void callback())

Runs the given callback asynchronously as soon as possible.

This function is equivalent to new Timer(Duration.ZERO, callback).

Source 

static void run(void callback()) {
  new Timer(Duration.ZERO, callback);
}

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-async/Timer/run.html